PLUTO: Black & White Hexagons

Hath in these last days spoken unto us by his Son, .... by whom also he made the worlds;
Hebrews 1:2

"Pluto’s light curve worked something like this: Imagine a black-and-white soccer ball half as wide as the continental US. Coat it in ice. Place it 3 billion miles away. Now spin it on its axis once a
week and watch it through a telescope. 

Even though the image may be faint and/or blurry, there will still be features that you can appreciate. 

When more black pentagons on the soccer ball’s surface move into your image, the amount of light you are looking at will transiently drop. 

When more white hexagons move into your image, the image gets temporarily brighter overall.

It’s important to remember that Pluto’s orbit is far more eccentric, or elliptical, than any of the eight planets. It may be that as Pluto approaches closer to the Sun, in a manner reminiscent of a comet, parts of its surface actually boil away in sunlight. 

If that were the case, the result would be that Pluto’s dark patches would slowly evaporate, leaving a brighter surface behind." Astrobiology

Q: If the solar system is really over 4 BILLION years old......then shouldn't Pluto have just WHITE hexagons by now--if this theory is correct? Just asking...